EU Should Pursue Big Companies Over Tax Deals: Official

Antitrust Chief-Designate Calls for Investigation

BRUSSELS—Complex tax deals that allow multinationals such as Apple Inc. to lower their tax bills are "very unfortunate" and should be investigated as a priority, the European Union's antitrust chief-designate said Thursday.

"I think this is a very, very serious issue," former Danish economy minister Margrethe Vestager told European lawmakers at a confirmation hearing.